X-Git-Url: https://git.stderr.nl/gitweb?p=matthijs%2Fmaster-project%2Freport.git;a=blobdiff_plain;f=pret-trans.lua;h=6ad51b74574768036e04200f2be9b0734f60a1b2;hp=ac1b525946364600d9bff3616f14ec6539921cd8;hb=ffef13cb64e18f66825b861a0ee709637125d9c3;hpb=cb736fa056825e66c2831a01843cfcaf4bf9b4b8

diff --git a/pret-trans.lua b/pret-trans.lua
index ac1b525..6ad51b7 100644
--- a/pret-trans.lua
+++ b/pret-trans.lua
@@ -9,7 +9,7 @@
 
 local utf = unicode.utf8
 
-vis = buffers.newvisualizer("trans")
+local vis = buffers.newvisualizer("trans")
 
 local commands = {}
 -- A command to create a horizontal rule.
@@ -91,7 +91,11 @@ function vis.end_of_display()
             break
         end
     end
-   
+  
+    if not len then
+        error("No horizontal separator found in:\n" .. table.concat(lines, "\n"))
+    end
+
     -- Split the input in three parts. Stuff before the line, stuff
     -- after the line, stuff to the right of the line.
     before, after, rights = {}, {}, {}